TRSPieChart.Offset Property

Defines where on the pie chart the first pie slice starts. By default (Offset = 0), the pie chart draws the first pie slice starting to the right (3:00 on a clock) and goes counter-clockwise. By specifying a different offset from 0 to 359, the first pie slice will start somewhere else on the clock (90=12:00, 180=9:00, etc).